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Re: Errors on your web page
On Wed, Nov 26, 2008 at 10:47:07AM -0500, Robert Dewar wrote:
> Steve Kargl wrote:
>
> >With regard to the top 10% performance, Absoft is simply comparing
> >the overall mean performance numbers from the Polyhedron Benchmark.
> >gfortran will never look good by that metric because there are at
> >least 2 programs that would benefit from in-lining non-contained
> >subprograms and intraprocedural optimization. gfortran doesn't do
> >these, yet.
>
> overall mean performance seems a perfectly fair measure I would say ...
Not if you don't include the standard deviation and/or variance.
With only 16 samples, having 2 rather large outlier points will
skew the mean.
Additionally, they are comparing the compiler against gfortran 4.1.2.
There have been a few releases and a few improvements since 4.1.2
was released.
--
Steve